Folding knife



FIG. 1 is a top perspective view of a folding knife as shown and described;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side elevation view thereof;

FIG. 8 is a left side elevation view thereof;

FIG. 9 is a top perspective view of the folding knife as shown in FIG. 1 with the blade holder being folded into the handle;

FIG. 10 is a bottom perspective view thereof;

FIG. 11 is a top view thereof;

FIG. 12 is a front view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a bottom view thereof;

FIG. 15 is a right side elevation view thereof; and,

FIG. 16 is a left side elevation view thereof.

The broken lines depict portions of the folding knife with interchangeable blade in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a “folding knife,” as shown and described. 